Conair or porthole refrigerated containers that do not have their own refrigeration unit are usually supplied with cold air by refrigeration units installed in the vessel or by clip-on refrigeration units. The clip-on units usually have their own temperature recorders that use normal circular temperature charts whereas the refrigeration units installed on the vessel are usually monitored by a central system. This generates printouts at given intervals, usually every four hours, showing the supply and return air temperatures of all the connected containers. Figure 45 shows an example of a printout of this type. The containers are identified according to their stowage locations in the vessel. Often used in conjunction with a log printer for recording the temperatures, an alarm printer is also available which prints alarms and any failures of the refrigeration system.
 |
| Figure 44: Conair refrigeration system on a vessel |
 |
| Figure 45: Example of a temperature printout of a Conair container refrigeration system on a vessel |
|
